Читать книгу Need to Know Fertility, Conception and Pregnancy - Harriet Sharkey - Страница 66

A US food and drug administration panel has recently recommended that pregnant women should limit their consumption of those fish that are at the top of the food chain. So you should not eat a lot of tuna, and completely avoid swordfish, shark, tilefish and king mackerel. This is because of concerns that these particular fish may contain levels of mercury that could be harmful to people, especially developing babies.

Mercury enters the sea environment through pollution and virtually all fish contain tiny amounts of mercury. Long-lived fish that are predators, such as sharks or swordfish, accumulate the greatest amounts of mercury in their bodies and so might be harmful to people who eat them regularly. The safe level of tuna intake with regard to the effects of mercury in pregnancy has not been established, but in the meantime it has been recommended that pregnant women should eat no more than two 175 g (6 oz) cans of tuna each week, just to be on the safe side.